From mboxrd@z Thu Jan  1 00:00:00 1970
From: Rusty Russell <rusty@rustcorp.com.au>
Date: Thu, 13 Mar 2014 03:52:35 +0000
Subject: Re: [PATCH v2 2/2] kallsyms: handle special absolute symbols
Message-Id: <87lhwevk98.fsf@rustcorp.com.au>
List-Id: <linux-ia64.vger.kernel.org>
References: <1394240425-11647-1-git-send-email-keescook@chromium.org> <1394240425-11647-3-git-send-email-keescook@chromium.org> <CAGXu5j+QoHH004usCiCfJU6DPQFnQ2gt3P4GDLS7Gx8Tz_gK+A@mail.gmail.com> <87y50fuei5.fsf@rustcorp.com.au> <CAGXu5j+Zto=D_UYgn6DLVcOQyB_8sAs86masY8iuDTU5ZEZ8OQ@mail.gmail.com>
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To: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>, Andrew Morton <akpm@linux-foundation.org>, Andrew Honig <ahonig@google.com>, Michal Marek <mmarek@suse.cz>, "x86@kernel.org" <x86@kernel.org>, Tejun Heo <tj@kernel.org>, Tony Luck <tony.luck@intel.com>, Fenghua Yu <fenghua.yu@intel.com>, linux-ia64@vger.kernel.org, LKML <linux-kernel@vger.kernel.org>

Kees Cook <keescook@chromium.org> writes:
> Why not just do this with 0-base-address detection like my v2? That
> would mean we don't need to remember to add this flag in the future to
> imagined new architectures that might want this 0-based per_cpu
> feature.

Because future architectures will get this right and emit absolute
symbols.  I hope!

I'm swamped at the moment, but am hoping to investigate that for
x86-64.  This is a stop-gap.

Cheers,
Rusty.